KR20160027579A

KR20160027579A - Natural wallpaper

Info

Publication number: KR20160027579A
Application number: KR1020140115531A
Authority: KR
Inventors: 정근수; 이시영
Original assignee: (주)엘지하우시스
Priority date: 2014-09-01
Filing date: 2014-09-01
Publication date: 2016-03-10

Abstract

Provided is environment-friendly wallpaper which has: a first stacked structure including a substrate layer, a bottom foaming layer, a non-foaming layer, and a printing layer; or a second stacked structure including a substrate layer, a bottom foaming layer, an upper foaming layer, and a printing layer. The bottom foaming layer and the upper foaming layer comprise an embossing pattern formed with convex and concave structures. The environment-friendly wallpaper of the present invention has an aesthetic impression by embodying a voluminous appearance, and does not release harmful substances such as endocrine-disrupting chemicals or toxic gas when discarded.

Description

Eco-friendly wallpaper {NATURAL WALLPAPER}

Provide environmentally friendly wallpaper.

Typical silk wallpaper is also called PVC wallpaper, wallpaper coated with PVC resin on paper, and its surface texture is soft like silk, which is currently the most preferred wallpaper.

However, existing silk wallpapers use phthalate plasticizer in PVC resin, and there are limitations on environmental friendliness, and it releases a lot of harmful substances such as environmental hormone by plasticizer and toxic gas in case of fire, and causes severe environmental pollution.

An embodiment of the present invention provides an eco-friendly wallpaper in which an aesthetic feeling is given due to an emboss pattern of a lower foam layer or an upper foam layer, and an environment-friendly aspect is improved.

In one embodiment of the present invention, a first laminate structure of a substrate layer, a lower foam layer, a non-foam layer, and a print layer; Or a base layer, a lower foam layer, an upper foam layer, and a print layer, wherein the lower foam layer and the upper foam layer have embossed patterns formed by embossing and engraving.

The non-foamed layer of the first laminated structure and the printed layer may include a patterned embossed pattern matching the lower foamed layer.

The printed layer of the second laminated structure may include a patterned embossed pattern matching the upper foamed layer.

The emboss pattern may be formed by foaming the lower foam layer and the upper foam layer.

The thickness of the embossed pattern may be about 100 um to about 1,000 um.

The lower foam layer and the upper foam layer may have an expansion ratio of about 150% to about 400%.

The thickness of the lower foam layer, and the upper foam layer may be from about 200 [mu] m to about 600 [mu] m.

The lower foam layer and the upper foam layer may be formed of a foam composition comprising a biodegradable resin, a foaming agent, and a non-phthalate plasticizer.

The non-foamed layer may be formed of a non-foamed composition comprising a biodegradable resin and a non-phthalate plasticizer.

The blowing agent may be selected from the group consisting of azodicarbonamide, azodicarboxamide, benzenesulfonylhydrazide, dinitrosopentamethylenetetramine, toluenesulfonylhydrazide, azobisisobutyronitrile, barium azodicarboxylate, sodium bicarbonate , p, p-oxybis (benzenesulfonylhydrazide), and combinations thereof.

The biodegradable resin may be at least one selected from the group consisting of polylactic acid, polyglycolic acid, polycaprolactone, aliphatic polyester, polyhydroxybutyric acid, and combinations thereof.

The nonphthalate plasticizer may be a phosphate plasticizer or a citrate plasticizer.

The foamed composition may contain about 1 part by weight to about 10 parts by weight of the foaming agent and about 10 parts by weight to about 90 parts by weight of the plasticizer, based on 100 parts by weight of the biodegradable resin.

The non-foamable composition may contain about 10 parts by weight to about 90 parts by weight of the plasticizer, based on 100 parts by weight of the biodegradable resin.

And a coating layer formed on the printing layer to expose a part of the printing layer.

The coating layer may be formed of a coating composition comprising a non-PVC resin, and a foaming agent.

The non-PVC resin may be an acrylic resin; And a composite resin with at least one resin selected from the group consisting of polylactic acid, poly (butylene succinate), polybutylene succinate / adipate copolymer, polybutylene adipate / terephthalate copolymer, and combinations thereof. .

The above-mentioned composite resin is preferably a mixture of 100 parts by weight of the acrylic resin with at least one selected from the group consisting of polylactic acid, poly (butylene succinate), polybutylene succinate / adipate copolymer, polybutylene adipate / terephthalate copolymer, From about 10 parts by weight to about 50 parts by weight of a resin that is at least one selected from the group consisting of

The thickness of the coating layer may be from about 1 um to about 10 um.

The environmentally friendly wallpaper can realize a volume-aware appearance and may not release harmful substances such as environmental hormones or toxic gases at the time of disposal.

1 is a sectional view of an eco-friendly wallpaper, which is an embodiment of the present invention.
2 is a cross-sectional view of an eco-friendly wallpaper according to another embodiment of the present invention.
3 is a cross-sectional view of an eco-friendly wallpaper, which is another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail. However, the present invention is not limited thereto, and the present invention is only defined by the scope of the following claims.

In the drawings of the present specification, the thicknesses are enlarged to clearly indicate layers and regions. In the drawings, for the convenience of explanation, the thicknesses of some layers and regions are exaggerated.

Hereinafter, the formation of any structure in the "upper (or lower)" or the "upper (or lower)" of the substrate means that any structure is formed in contact with the upper surface (or lower surface) of the substrate However, the present invention is not limited to not including other configurations between the substrate and any structure formed on (or under) the substrate.

The eco-friendly wallpaper can realize a volume-aware appearance due to the lower foam layer and the upper foam layer, and the lower foam layer, the non-foam layer, and the upper foam layer are not made of polyvinyl chloride (PVC) Containers may not release harmful substances such as environmental hormones or toxic gases at the time of disposal.

1 is a sectional view of an eco-friendly wallpaper according to an embodiment of the present invention. Referring to Fig. 1, the eco-friendly wallpaper includes a base layer 10, a lower foam layer 20, Layer < / RTI > (100) of layer (40).

2, the eco-friendly wallpaper includes a substrate layer 10, a lower foam layer 20, an upper foam layer 31, And a second laminate structure 110 of layer 40.

The lower and upper foam layers may include an emboss pattern formed by embossing and engraving. The emboss pattern can be embossed and engraved to provide an eco-friendly wallpaper with a sense of volume, and an eco-friendly wallpaper can be added to the eco-wallpaper to achieve a design effect.

The emboss pattern may be formed by foaming the lower and upper foam layers. The lower and upper foamed layers may be prepared by knife coating, rotary screen coating or spray coating, and foaming may be performed at a temperature of about 150 ° C to 240 ° C to form an emboss pattern.

The lower and upper foam layers are formed by a foam composition to be described later. Specifically, the foaming agent contained in the foam composition is foamed to form foam cells, whereby the foam cells are formed into embossed and embossed The pattern can be displayed.

The thickness of the embossed pattern may be about 100 um to about 1,000 um. The emboss pattern thickness can be controlled according to the particle diameter, foaming temperature, foaming speed, etc. of the foaming agent. However, maintaining the above range can realize a stereoscopic effect on the appearance and facilitate the workability.

Referring to FIG. 1, the first laminated structure includes a lower foamed layer, and the embossed pattern formed by the lower foamed layer may be reflected on the non-foamed layer and the printed layer.

The non-foam layer and the print layer of the first laminated structure may include a patterned emboss pattern matching the lower foam layer. The patterned embossed pattern refers to an emboss pattern that reflects the emboss pattern of the lower foam layer and coincides with the emboss pattern of the lower foam layer. The weave expression can be realized according to the emboss pattern embossed by the embossed pattern, the non-foam layer, and the printed layer included in the lower foam layer, so that the eco-friendly wallpaper can have a fiber feel.

Further, in the case of the print layer, a more colorful appearance can be realized owing to the combined visual effect of the pattern embossed emboss pattern and the print pattern included in the print layer.

Referring to FIG. 2, the second laminated structure includes the lower foam layer and the upper foam layer at the same time, and the emboss pattern formed by the upper foam layer may be reflected on the print layer.

Thus, the print layer of the second laminated structure may include a patterned emboss pattern matching the upper foam layer. The patterned embossed pattern refers to an emboss pattern that matches the emboss pattern of the upper foam layer by reflecting the emboss pattern of the upper foam layer.

According to the emboss pattern of the upper foam layer and the patterned emboss pattern of the printed layer, the environmentally friendly wallpaper can have a fiber feel, and the emboss pattern and the upper foam layer of the lower foam layer, It is possible to maximize the feeling of weaving weave of environmentally friendly wallpaper.

As compared with the first laminated structure, the second laminated structure improves stereoscopic volume feeling, so that the effect of the fabric feeling can be realized more easily.

The lower and upper foam layers may have an expansion ratio of about 150% to about 400%. The expansion ratio means a value obtained by dividing the apparent density of the lower and upper foam layers by the apparent density before foaming. Maintaining the expansion ratio in the above range can improve embossability and scratch characteristics.

Within this range, the expansion ratio of the lower and upper foam layers may be the same or different. It is advantageous to realize a sense of fabric when the expansion ratio of the lower foam layer is larger and a volume feeling when the expansion ratio of the upper foam layer is larger.

The thickness of the lower and upper foam layers may be between about 200 um and about 600 um. When the thickness is less than about 200 袖 m, the lower and upper foamed layers may be folded or torn when applied. When the thickness exceeds about 600 袖 m, there is a problem that the surface is torn. Quality can be easily implemented.

The lower and upper foam layers may be formed of a foam composition comprising a biodegradable resin, a foaming agent, and a non-phthalate plasticizer.

When the content of the foaming agent is less than about 1 part by weight, foaming performance of the foam composition is lowered, and when it is more than about 10 parts by weight, the strength of the lower and upper foamed layers and heat resistance may be lowered.

In addition, it is advantageous to maintain the plasticizer content in the above range in terms of maximizing plasticization.

The non-foaming composition does not contain a blowing agent, and the plasticizer can be kept within the above range. When the plasticizer is less than about 10 parts by weight, the flexibility may deteriorate. When the plasticizer is more than about 90 parts by weight, bleeding may occur .

When the particle diameter of the foaming agent is small, the lower foamed layer having a uniform bubble diameter because the pyrolysis rate of the foaming agent becomes faster and the bubble becomes larger, the pyrolysis rate becomes slower and the bubble becomes smaller when the foaming agent becomes larger. In order to obtain the upper foamed layer, For example from about 5 [mu] m to about 28 [mu] m.

When the temperature difference between the decomposition temperature of the foaming agent and the melting point of the biodegradable resin is large, a decomposition promoting agent for the foaming agent can be used. As the decomposition accelerator, compounds such as zinc oxide, magnesium oxide, calcium stearate, glycerin and urea can be used.

The biodegradable resin may be at least one selected from the group consisting of polylactic acid, polyglycolic acid, polycaprolactone, aliphatic polyester, polyhydroxybutyric acid, and combinations thereof. By using the biodegradable resin as the base resin of the foamed and non-foamed composition, the environment friendliness can be improved.

In addition, the nonphthalate plasticizer may be a phosphate plasticizer or a citrate plasticizer. The citrate based plasticizer is selected from the group consisting of triethyl citrate, acetyl triethyl citrate, tributyl citrate, acetyl tributyl citrate, trioctyl citrate, acetyl trioxyl citrate, trihexyl citrate, acetyl trihexyl citrate, Butyryl trihexyl citrate, trimethyl citrate, and the like.

3, the eco-friendly wallpaper includes a substrate layer 10, a lower foam layer 20, an upper foam layer 31, a print layer 31, (40) and a coating layer (50).

And a coating layer formed on the printing layer to expose a part of the printing layer. The coating layer is partially formed on the printing layer, and the printing layer may be exposed in a portion where the coating layer is not formed.

The coating layer may minimize the deformation of the environmentally-friendly wallpaper.

For example, if the printed layer includes a patterned embossed pattern by the lower foam layer and a patterned embossed pattern by the upper foamed layer, the coating layer formed on the printed layer may be partially embossed.

The coating layer may be formed of a coating composition comprising a non-PVC resin, and a foaming agent. The foaming agent is as described above, and the coating layer can be produced by foaming the foaming agent.

Although the content of the non-PVC material relative to the total content of the coating composition is not particularly limited, from the viewpoint that the decomposition rate is increased and the shape collapse property after decomposition is improved when the content of the non-PVC material is increased, From about 50 parts by weight to about 70 parts by weight, relative to parts by weight.

The acrylic resin is advantageous in that it can maintain a uniform quality irrespective of the seasonal temperature change while forming a high expansion ratio.

The composite resin is composed of polylactic acid, poly (butylene succinate), a polybutylene succinate / adipate copolymer, a polybutylene adipate / terephthalate copolymer, and a combination thereof, based on 100 parts by weight of the acrylic resin From about 10 parts by weight to about 50 parts by weight of the resin.

If the content of the resin is less than about 10 parts by weight, the coating layer may be too hard to cause a curling phenomenon before or after the wallpaper is formed. If the resin content exceeds about 50 parts by weight, heat resistance may be poor.

The thickness of the coating layer may be from about 1 um to about 10 um. If the thickness of the coating layer is less than about 1 탆, gas leakage from the surface of the coating layer is large during foaming, so that uniform foaming can not be attained. If the thickness exceeds about 10 탆, the coating layer has high rigidity, have.

The base layer 10 may be a known wallpaper base material without limitation, and examples thereof include, but are not limited to, imitation, polyester nonwoven fabric, pulp nonwoven fabric, and polyester / pulp composite nonwoven fabric.

The base layer 10 may have a basis weight of 80 g / m ² to 200 g / m ² . If the basis weight of the base layer is less than the above range, damage such as tearing of wall paper may occur during construction or use, and if it exceeds, the workability such as heaviness, crack opening and curling may be caused.

For example, the substrate layer 10 may be defined according to the application to which the wallpaper is applied, and may have a thickness of, for example, from about 0.1 mm to about 0.3 mm.

The print layer 40 may be manufactured by a gravure or rotary screen method. Since the printing layer is printed on the non-foam layer 30 or the upper foam layer 31 including the emboss pattern, a delicate print pattern can be imparted and a visual effect combined with the emboss pattern can be realized.

Hereinafter, specific embodiments of the present invention will be described. However, the embodiments described below are only intended to illustrate or explain the present invention, and thus the present invention should not be limited thereto.

100: first laminated structure, 110, 120: second laminated structure
10: substrate layer, 20: lower foam layer
30: non-foam layer, 31: upper foam layer
40: printing layer, 50: coating layer

Claims

A first laminated structure of a substrate layer, a lower foamed layer, a non-foamed layer, and a printed layer; or
A base layer, a lower foam layer, an upper foam layer, and a printing layer,
Wherein the lower foam layer and the upper foam layer comprise an emboss pattern formed with embossed and engraved
Eco-friendly wallpaper.

The method according to claim 1,
Wherein the non-foam layer of the first laminated structure and the printed layer comprise a patterned embossed pattern matching the lower foam layer
Eco-friendly wallpaper.

The method according to claim 1,
Wherein the printed layer of the second laminated structure comprises a patterned embossed pattern matching the upper foamed layer
Eco-friendly wallpaper.

The method according to claim 1,
The emboss pattern is formed by foaming the lower foam layer and the upper foam layer
Eco-friendly wallpaper.

The method according to claim 1,
The emboss pattern has a thickness of 100 to 1,000 um
Eco-friendly wallpaper.

The method according to claim 1,
Wherein the lower foam layer and the upper foam layer have an expansion ratio of 150% to 400%
Eco-friendly wallpaper.

The method according to claim 1,
The thickness of the lower foamed layer and the upper foamed layer is 200 [mu] m to 600 [mu] m
Eco-friendly wallpaper.

The method according to claim 1,
The lower foam layer and the upper foam layer are formed by a foam composition comprising a biodegradable resin, a foaming agent, and a non-phthalate plasticizer
Eco-friendly wallpaper.

The method according to claim 1,
The non-foamable layer is formed of a non-foamable composition comprising a biodegradable resin and a non-phthalate plasticizer
Eco-friendly wallpaper.

9. The method of claim 8,
The blowing agent may be selected from the group consisting of azodicarbonamide, azodicarboxamide, benzenesulfonylhydrazide, dinitrosopentamethylenetetramine, toluenesulfonylhydrazide, azobisisobutyronitrile, barium azodicarboxylate, sodium bicarbonate , p, p-oxybis (benzenesulfonylhydrazide), and combinations thereof.
Eco-friendly wallpaper.

10. The method according to claim 8 or 9,
Wherein the biodegradable resin is at least one selected from the group consisting of polylactic acid, polyglycolic acid, polycaprolactone, aliphatic polyester, polyhydroxybutyric acid, and combinations thereof
Eco-friendly wallpaper.

10. The method according to claim 8 or 9,
The nonphthalate plasticizer may be a phosphate plasticizer or a citrate plasticizer
Eco-friendly wallpaper.

9. The method of claim 8,
Wherein the foaming composition comprises 1 to 10 parts by weight of the foaming agent and 10 to 90 parts by weight of the plasticizer, based on 100 parts by weight of the biodegradable resin
Eco-friendly wallpaper.

10. The method of claim 9,
The non-foamable composition contains 10 to 90 parts by weight of the plasticizer relative to 100 parts by weight of the biodegradable resin
Eco-friendly wallpaper.

The method according to claim 1,
And a coating layer formed on the printing layer to expose a part of the printing layer
Eco-friendly wallpaper

16. The method of claim 15,
The coating layer is formed of a coating composition comprising a non-PVC resin, and a foaming agent
Eco-friendly wallpaper.

17. The method of claim 16,
The non-PVC resin may be an acrylic resin; And
A composite resin with at least one resin selected from the group consisting of polylactic acid, poly (butylene succinate), polybutylene succinate / adipate copolymer, polybutylene adipate / terephthalate copolymer, and combinations thereof
Eco-friendly wallpaper.

18. The method of claim 17,
The above-mentioned composite resin is preferably a mixture of 100 parts by weight of the acrylic resin with at least one selected from the group consisting of polylactic acid, poly (butylene succinate), polybutylene succinate / adipate copolymer, polybutylene adipate / terephthalate copolymer, From 10 to 50 parts by weight of at least one resin selected from the group consisting of
Eco-friendly wallpaper.

16. The method of claim 15,
The thickness of the coating layer is preferably 1 mu m to 10 mu m
Eco-friendly wallpaper.